Yes, of course it is sad. However, the man is 57 years old and there is no information about illness or being handicapped. Neither no such information about his wife. At an age like that, you normally do not have your daughters home as the only resort. Is any of them working? Maybe they can not find the right work, but have to take whatever they can find to support their life and relationship. At least if they do that, they would surely be able to rent a room for about 2000 baht per month.